Most countries have laws about age limits under which the consumers are not allowed to view certain content (i.e., adult industry) or use certain features or services (i.e., gambling).
ID document check is commonly used at the entrance in bars, while websites usually either use simple questionnaires or require the end user to enter her credit card number as proof of her legal age.
None of these methods is either reliable or popular. Using the Identyum services, a company can verify the end user’s age by directly integrating, scanning a QR code on the website, or using NFC with a mobile phone to trigger age verification. The end user is always at the center of data sharing, and she has to give her explicit consent that data about her being 18+ will be shared and with whom. She can also rest assured that NO other personal data (other than her being 18+) will be shared.